public static string JsonSerialize <T>(this T obj,
IApplication httpApp, IHttpRequest request)
{
var converter = new Serialization.ExtrudeConvert(request, httpApp);
var jsonObj = JsonConvert.SerializeObject(obj,
new JsonSerializerSettings
{
Converters = new JsonConverter[] { converter }.ToList(),
});
return(jsonObj);
}
public async Task SerializeAsync(Stream responseStream,
IApplication httpApp, IHttpRequest request,
ParameterInfo paramInfo, object obj)
{
var jsonCastersHttpApp = httpApp
.GetType()
.GetAttributesInterface <ICastJson>()
.ToArray();
var encoding = request.TryGetAcceptCharset(out Encoding writerEncoding) ?
writerEncoding
:
new UTF8Encoding(false);
using (var textWriter = new StreamWriter(responseStream, encoding))
{
var jsonWriter = new JsonTextWriter(textWriter);
var serializer = new JsonSerializer();
var converter = new Serialization.ExtrudeConvert(request, httpApp);
serializer.Converters.Add(converter);
await WriteToStreamAsync(jsonWriter, serializer, obj);
}
async Task WriteToStreamAsync(JsonTextWriter jsonWriter, JsonSerializer serializer, object obj)
{
if (obj.IsNull())
{
await jsonWriter.WriteNullAsync();
return;
}
await jsonWriter.WriteStartObjectAsync();
var members = obj.GetType()
.GetPropertyAndFieldsWithAttributesInterface <IProvideApiValue>();
foreach (var(member, apiValueProvider) in members)
{
var memberValue = member.GetPropertyOrFieldValue(obj);
if (memberValue.IsNull() && IgnoreNull)
{
continue;
}
await WriteAsync(member.GetAttributesInterface <ICastJson>(),
onCouldNotCast : () =>
{
var objType = obj.GetType();
return(WriteAsync(objType.GetAttributesInterface <ICastJson>(),
() => WriteAsync(jsonCastersHttpApp,
() =>
{
var memberType = member.GetPropertyOrFieldType();
return WriteAsync(memberType.GetAttributesInterface <ICastJson>(),
async() =>
{
if (memberType.IsArray)
{
await jsonWriter.WritePropertyNameAsync(apiValueProvider.PropertyName);
await WriteArrayAsync(memberType);
return;
}
if (memberType.TryGetAttributeInterface(out IProvideSerialization serializationProvider))
{
await jsonWriter.WritePropertyNameAsync(apiValueProvider.PropertyName);
using (var cacheStream = new MemoryStream())
{
await serializationProvider.SerializeAsync(cacheStream,
httpApp, request, paramInfo, memberValue);
var rawJson = cacheStream.ToArray().GetString(encoding);
await jsonWriter.WriteRawValueAsync(rawJson);
}
return;
}
await jsonWriter.WriteCommentAsync(
$"Cannot find {nameof(ICastJson)} interface for " +
$"{member.DeclaringType.FullName}..{member.Name}");
return;
});
})));
